1/8 Vehicle Model

The simplest vibrating model of vehicles is considering only vertical vibration of the vehicle while ignoring the flexibility of tires compared to the stiffness of the main springs. Let us cut a vehicle longitudinally and laterally, and we keep one quarter of the vehicle, and then, assume that tires are rigid and massless. This way we model a vehicle with a one degree of freedom (DOF) base excited system with the mass m to be one quarter of the mass of the body of vehicle, and suspension spring k and damper c to be equal to k and c of one side of the vehicle.